Issue 1344 - fix three leading underscores issue in _check_method_and_attr_name

[rachelzUT]

Proposed Changes

Closes #1344

Modifies InvalidNameChecker to allow all name patterns to have up to 2 leading underscores, so _check_method_and_attr_name no longer separately checks for double leading underscores. Suggested name fixes are also changed to suggest two leading underscores if prefixes are longer than 2 characters.

Also modified _to_snake_case to use_parse_name to be consistent with _to_pascal_case and _to_upper_case_with_underscores.

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Screenshots of your changes (if applicable)

Type of Change

Type	Applies?
🚨 Breaking change (fix or feature that would cause existing functionality to change)
✨ New feature (non-breaking change that adds functionality)
🐛 Bug fix (non-breaking change that fixes an issue)	X
♻️ Refactoring (internal change to codebase, without changing functionality)
🚦 Test update (change that only adds or modifies tests)
📚 Documentation update (change that only updates documentation)
📦 Dependency update (change that updates a dependency)
🔧 Internal (change that only affects developers or continuous integration)

Checklist

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Questions and Comments

Additionally made a few modifications to some function docstrings to reflect these (and other recent) changes.

[coveralls]

Coverage Report for CI Build 26858357806

Coverage increased (+0.004%) to 90.699%

Details

• Coverage increased (+0.004%) from the base build.
• Patch coverage: 9 of 9 lines across 1 file are fully covered (100%).
• No coverage regressions found.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	3946
Covered Lines:	3579
Line Coverage:	90.7%
Coverage Strength:	17.61 hits per line

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💛 - Coveralls